Wind-resistant equipment wire clamp for ultra-high voltage transformer substation and manufacturing method of wind-resistant equipment wire clamp

Abstract

The invention discloses a wind-resistant equipment wire clamp for an ultra-high voltage transformer substation and a manufacturing method thereof, and the manufacturing method comprises the following steps: S01, smelting; s02, carrying out deterioration; s03, refining is carried out; s04, mold pouring is conducted; s05, obtaining a fitting material with the tensile strength not smaller than 160 MPa and the elongation at break not smaller than 4%. According to the manufacturing method, the double-wire equipment wire clamp with the tensile strength and the elongation at break meeting the use requirements of a wind area is manufactured by controlling the process parameters of all the process links; according to the wind-resistant equipment wire clamp manufactured by using the manufacturing method, the connection parts of the two sides of the connecting plate and the double-wire equipment wire clamp body adopt the elliptical connection design, so that the change of the cross section is slowed down, the casting is facilitated, the defect output is reduced, and the wind-resistant performance is enhanced; and meanwhile, the joints of the two sides of the double-wire equipment wire clamp body and the aluminum pipe are designed to be 60-70-degree V-shaped grooves which are matched with each other, so that the double-wire equipment wire clamp body can be conveniently connected by adopting a full penetration welding mode, the welding effect is reliable and effective, and the use condition of a wind area is met.

Description

Technical Field

[0001] The present invention relates to the technical field of ultra-high voltage substation engineering, and in particular to a wind-resistant equipment wire clamp for an ultra-high voltage substation and a manufacturing method thereof. Background Art

[0002] Substations use a large number of double-conductor equipment clamps to connect conductors to equipment. As voltage levels continue to increase, conductor specifications are getting larger and larger, and crossing methods are becoming more complicated, which requires higher strength for hardware.

[0003] There are nine wind zones in Xinjiang, my country. In some areas, the wind force is above level 8 for nearly 200 days per year. Currently, there are more and more 750 kV and above EHV and UHV substations under construction. The wind-sensitive system composed of equipment clamps and conductors will cause fatigue cracking of equipment clamps under long-term strong winds. If equipment clamps are found to be cracked, power outages, maintenance and replacement of hardware are required. The reason is that the current equipment clamps have many internal defects, low strength, and unreliable welding structures. Under continuous strong winds, fatigue cracking is easy to occur from the welds and casting defects of the equipment clamps. In view of the increasing number of EHV and UHV substations, high-reliability wind-resistant equipment clamps are becoming more and more important.

[0004] The traditional double-conductor equipment clamp is divided into two parts. The first part is the aluminum tube for inserting the wire and crimping. It uses 1050A aluminum tube profile with good elongation. The second part is the body of the clamp connected to the electrical equipment. One end of the body is a connecting plate connected to the equipment, and the other end is a rod connected to the aluminum tube. At present, the body part is basically cast by ZL102 in the industry, which is relatively cheap and has a simple process. After the body is cast, the cylindrical end is inserted into the aluminum tube and then welded at the bottom, and the manufacture of the equipment clamp is completed. Because the wire is inserted into the aluminum tube and crimped during construction, this part has been strengthened, and the body of the equipment clamp has become a weak part. If the equipment clamp manufactured in the traditional way is not in the wind zone, it can usually meet the long-term operation requirements.

[0005] However, in windy areas, the welding parts are subject to fatigue loads and the corner welds are prone to cracking; the equipment wire clamps of high voltage levels of 750 kV and above have larger outer diameters of wires and larger specifications and dimensions. Affected by the rapid cooling and solidification of the edge of the metal mold, the wire clamp body is prone to dense pores, looseness and other defects; in addition, improper process control in the ZL102 casting process can easily lead to low strength of the equipment wire clamp body and poor fatigue resistance, making it impossible to use reliably outdoors in windy areas. Summary of the invention

[0006] In order to overcome the above problems, the purpose of the present invention is to provide a wind-resistant equipment wire clamp for an ultra-ultra-high voltage substation and a manufacturing method thereof. The manufacturing method of the wind-resistant equipment wire clamp for an ultra-ultra-high voltage substation controls the process parameters of each process link to manufacture a double-conductor equipment wire clamp whose tensile strength and elongation at break meet the use requirements of windy areas. The connection between the two sides of the connecting plate of the wind-resistant equipment wire clamp manufactured by the manufacturing method and the double-conductor equipment wire clamp body adopts an elliptical connection design, so that its cross-section changes slowly, reduces the generation of defects in this part, reduces the amount of material used, and enhances its wind resistance. At the same time, the connection between the two sides of the double-conductor equipment wire clamp body and the aluminum tube adopts a full penetration structure, and the welding effect is reliable and effective, meeting the use conditions of windy areas.

[0007] The technical solution adopted by the present invention is:

[0008] A method for manufacturing a wind-resistant equipment wire clamp for an ultra-high voltage substation comprises the following steps:

[0009] S01: Melting, placing the aluminum ingot into the melting furnace, and setting the temperature of the melting furnace's insulation and dissolving zone to 700-760°C;

[0010] S02: Modification: When the temperature of the aluminum liquid reaches 740°C, add the modifier Al-10%Sr and keep it warm. The weight of the modifier added is 0.7%-0.9% of the total aluminum liquid weight. The insulation time is 20-30 minutes. After the modification process is completed, the aluminum alloy liquid ladle is obtained;

[0011] S03: Refining, removing gas and other non-metallic inclusions in the aluminum alloy liquid, that is, degassing and slag removal. The specific steps are:

[0012] S031: heating the mobile ladle to 400°C, moving the mobile ladle below the aluminum alloy liquid ladle obtained in S02, pouring the aluminum alloy liquid into the mobile ladle, and then moving the mobile ladle below the automatic refiner.

[0013] S032: Add the refining agent into the automatic refining machine to refine the aluminum alloy liquid ladle. The refining time is 5-10 minutes.

[0014] S033: Turn on the inert gas switch on the automatic refining machine and send inert gas into the aluminum alloy ladle for degassing. The degassing time is 10-15 minutes.

[0015] S034: Turn off the inert gas switch, turn off the automatic refiner and stop its rotor from rotating, remove the rotor of the automatic refiner from the aluminum alloy liquid ladle, and use a colander or skimmer to remove impurities on the surface of the aluminum alloy liquid.

[0016] S035: After the cleaning is completed, the ladle for aluminum alloy liquid is left standing for 10 min and then transferred into the holding furnace, and the holding temperature is 680 - 700 °C.

[0017] S04: Die casting. The die is preheated to 180 - 200 °C, and the refined and heat-insulated aluminum alloy liquid is poured into the die.

[0018] S05: Obtain fitting materials with a tensile strength of not less than 160 MPa and an elongation at break of not less than 4%.

[0019] As a further description of the present invention, the furnace chamber of the melting furnace in S01 needs to be kept clean, free of aluminum ash, aluminum slag, dust and other sundries.

[0020] As a further description of the present invention, the aluminum ingot used in S01 is made of ZL102, and the aluminum ingot is an aluminum ingot with qualified chemical composition after recheck.

[0021] As a further description of the present invention, the inert gas in the refining process of S03 can be nitrogen or argon.

[0022] The wind-resistant equipment clamp for ultra-high voltage substations manufactured by using the manufacturing method of the wind-resistant equipment clamp for ultra-high voltage substations includes a double-conductor equipment clamp body and a connecting plate. The double-conductor equipment clamp body and the connecting plate are integrally cast. The double-conductor equipment clamp body is of a U-shaped structure, and its cross-section is a circular structure. The connecting plate is of a plate-shaped planar structure. The connecting plate is connected to the middle position of the double-conductor equipment clamp body, and the connection parts between the two sides of the connecting plate and the double-conductor equipment clamp body adopt an oval connection design.

[0023] As a further description of the present invention, according to the wall thickness of the aluminum pipe, the two rod-shaped ends of the equipment clamp body on both sides of the double-conductor equipment clamp body are processed into a shape that can be inserted into the aluminum pipe, with a length of 50 mm, so as to form a V-shaped groove with an angle of 60° - 70° and a root gap of 2 - 3 mm after insertion, which is convenient for full penetration welding during welding.

[0024] As a further description of the present invention, reinforcing ribs are designed on both sides of the connecting plate.

[0025] The beneficial effects of the present invention:

[0026] The manufacturing method of a wind-resistant equipment clamp for ultra-high voltage substations according to the present invention includes technological processes such as melting, modification, refining, and die casting. According to the usage of the double-conductor equipment clamp in the windy area, by strictly controlling the process parameters of each technological process, a double-conductor equipment clamp with a tensile strength and an elongation at break meeting the usage requirements in the windy area is manufactured, which can meet the usage requirements in the windy area and ensure that the tensile strength of the double-conductor equipment clamp meets the usage requirements.

[0027] The invention discloses a method for manufacturing a wind-resistant equipment wire clamp for an ultra-high voltage substation. The equipment wire clamp is made of ZL102 alloy. The strength of the equipment wire clamp body is improved by using processes such as modification, refining and preheating before pouring. The purpose of modification is to refine the grains and improve the toughness of the material. The purpose of refining treatment is to remove gas and various non-metallic inclusions in aluminum alloy liquid, that is, to degas and remove slag, so as to obtain high-quality aluminum alloy liquid. Preheating before pouring prevents the metal mold edge from cooling and solidifying too fast to affect the internal gas discharge, thereby reducing internal pore defects.

[0028] The present invention discloses a wind-resistant equipment wire clamp for an ultra-high voltage substation. The connection parts between the two sides of the connection plate and the double-conductor equipment wire clamp body adopt an elliptical connection design, so that the cross-section change is slowed down, the cross-section mutation is reduced, the casting is facilitated, the defects are reduced, the strength is enhanced, and the wind resistance is enhanced.

[0029] The present invention discloses a wind-resistant equipment wire clamp for an ultra-high voltage substation. The connection between the two sides of the double-conductor equipment wire clamp body and the aluminum tube is designed to be inserted into the tube for 50 mm, and then fully penetrated butt welded. After the double-conductor equipment wire clamp body is inserted into the aluminum tube for 50 mm, a 60°-70° V-shaped groove is formed, and a fully penetrated structure is adopted to ensure the quality of the welding part. The welding effect is reliable and effective, and the use conditions in windy areas are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a flow chart of a method for manufacturing a wind-resistant equipment wire clamp for an ultra-high voltage substation proposed by the present invention;

[0031] Figure 2 S03 is a specific flow chart of a method for manufacturing a wind-resistant equipment wire clamp for an ultra-high voltage substation proposed by the present invention;

[0032] Figure 3 The front view and left view of a wind-resistant equipment wire clamp for an ultra-high voltage substation proposed by the present invention;

[0033] Figure 4 This is a schematic diagram of the connection structure between a wind-resistant equipment wire clamp and an aluminum tube for an ultra-high voltage substation proposed by the present invention;

[0034] Figure 5 The front view and left view of a traditional wind-resistant equipment wire clamp for an ultra-high voltage substation proposed by the present invention.

[0035] Description of Reference Numerals

[0036] 1- Double conductor equipment wire clamp base body,

[0037] 2-Connection plate,

[0038] 3- Aluminum tube,

[0039] 4-V-shaped groove. DETAILED DESCRIPTION

[0040] The specific implementation of the present invention is described below in conjunction with the accompanying drawings and embodiments:

[0041] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which the present invention can be implemented. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0042] At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.

[0043] like Figures 1 to 5 As shown, it shows a specific embodiment of the present invention:

[0044] Embodiment 1

[0045] The present invention discloses a method for manufacturing a wind-resistant equipment wire clamp for an ultra-high voltage substation, comprising the following steps:

[0046] S01: Melting, placing the aluminum ingot into the melting furnace, and setting the temperature of the melting furnace's insulation and dissolving zone to 700-760°C;

[0047] S02: Modification: When the temperature of the aluminum liquid reaches 740°C, add the modifier Al-10%Sr and keep it warm. The weight of the modifier added is 0.7%-0.9% of the total aluminum liquid weight. The insulation time is 20-30 minutes. After the modification process is completed, the aluminum alloy liquid ladle is obtained;

[0048] S03: Refining, removing gas and other non-metallic inclusions in the aluminum alloy liquid, that is, degassing and slag removal.

[0049] S04: Mold pouring: preheat the mold to 180-200℃ and pour the refined and insulated aluminum alloy liquid into the mold;

[0050] S05: Obtain hardware materials with a tensile strength of not less than 160MPa and an elongation at break of not less than 4%.

[0051] In this embodiment, Figure 1As shown, the manufacturing method includes smelting, metamorphism, refining, mold casting and other process links. According to the use of the double-conductor equipment clamp in the wind zone, the manufacturing method strictly controls the process parameters of each process link to manufacture the double-conductor equipment clamp whose tensile strength and elongation at break meet the use requirements of the wind zone. It can meet the use requirements of the wind zone and ensure that the tensile strength of the double-conductor equipment clamp meets the use requirements.

[0052] In this embodiment, aluminum is mainly used as the manufacturing material of the wind-resistant equipment wire clamp. Aluminum is a metal element. Its single substance is a silver-white light metal with ductility. It can form an oxide film to prevent metal corrosion in humid air. The relative density of aluminum is 2.70, its melting point is 660°C, and its boiling point is 2327°C. The content of aluminum in the earth's crust is second only to oxygen and silicon, ranking third. It is the most abundant metal element in the earth's crust. In actual production and life, aluminum is widely used in production and life due to its unique chemical properties and performance.

[0053] The equipment wire clamp material is ZL102 alloy, and the strength of the equipment wire clamp body is improved by using processes such as modification, refining and preheating before pouring. The purpose of modification is to refine the grains and improve the toughness of the material. The purpose of refining treatment is to remove gas and various non-metallic inclusions in the aluminum alloy liquid, that is, degassing and deslagging, so as to obtain high-quality aluminum alloy liquid; preheating before pouring avoids the metal mold edge cooling and solidification to affect the internal gas discharge quickly, and reduces internal porosity defects.

[0054] The smelting in S01 is a process of heating solid metal or alloy to a molten state, adjusting the composition and removing impurities. This step puts the purchased aluminum ingot into a smelting furnace to ensure the effective dissolution of the aluminum ingot within a specific temperature range.

[0055] The modification in S02 is to add some fine nucleating agents, also called inoculants or modifiers, into the molten metal, so that the nucleating agents form a large number of dispersed artificial non-spontaneous nuclei in the molten metal, thereby obtaining fine casting grains, and further achieving the purpose of improving material properties. Modification treatment is a method widely used in industrial production. In this step S02, when the temperature of the molten aluminum reaches 740°C, the modifier Al-10%Sr is added and kept warm. The relationship between the amount of the modifier added and the amount of aluminum ingots used is clearly defined to ensure the effectiveness of the process, so that the performance of the aluminum alloy liquid ladle obtained in this step meets the wind resistance performance.

[0056] The refining in S03 is to refine the liquid metal to remove impurities and gases and improve the purity and quality of the metal.

[0057] The mold casting in S04 is to select the corresponding mold for casting according to the hardware to be made. The mold of the double-conductor equipment clamp can be selected for casting, so that the wind-resistant equipment clamp can be obtained. Before casting, the mold is preheated to 180-200°C. At this time, the refined aluminum alloy liquid is poured into the mold. Setting 180-200°C can ensure that the aluminum alloy liquid is poured into the mold and quickly formed. After the manufacturing is completed, the hardware that meets the performance requirements is obtained.

[0058] The metal fitting material obtained in S05 has a tensile strength of not less than 160 MPa and an elongation at break of not less than 4%, which meets the wind resistance performance in actual use.

[0059] Specifically, the furnace of the smelting furnace in S01 needs to be kept clean and free of aluminum ash, aluminum slag, dust and other debris.

[0060] In this embodiment, the furnace of the smelting furnace used in S01 is clean and tidy, which can ensure the dissolution quality of the aluminum ingots during the smelting process and prevent impurities from entering the molten aluminum, thereby further ensuring that the wind-resistant equipment wire clamp manufactured using the manufacturing method meets the use requirements and is suitable for the strong wind environment in Xinjiang.

[0061] Specifically, the aluminum ingot in S01 is made of ZL102, and the aluminum ingot has a qualified chemical composition after review.

[0062] In this embodiment, the requirements for the aluminum ingots used in the smelting process can further ensure the accuracy of the molten aluminum obtained by smelting, and ensure that the strength of the wind-resistant equipment wire clamp obtained according to the manufacturing method meets the requirements.

[0063] The specific steps of S03 are:

[0064] S031: heating the mobile ladle to 400°C, moving the mobile ladle below the aluminum alloy liquid ladle obtained in S02, pouring the aluminum alloy liquid into the mobile ladle, and then moving the mobile ladle below the automatic refiner.

[0065] S032: Add the refining agent into the automatic refining machine to refine the aluminum alloy liquid ladle. The refining time is 5-10 minutes.

[0066] S033: Turn on the inert gas switch on the automatic refining machine and send inert gas into the aluminum alloy ladle for degassing. The degassing time is 10-15 minutes.

[0067] S034: Turn off the inert gas switch, turn off the automatic refiner and stop its rotor from rotating, remove the rotor of the automatic refiner from the aluminum alloy liquid ladle, and use a colander or skimmer to remove impurities on the surface of the aluminum alloy liquid.

[0068] S035: After cleaning, the aluminum alloy molten ladle is placed in a holding furnace for 10 minutes and the holding temperature is 680-700℃.

[0069] In this embodiment, if Figure 2 As shown, the S03 refining process is an important process in the manufacturing process of the wind-resistant equipment wire clamp. The above five steps S031 to S035 are used to clarify the specific process of the manufacturing method, and a double-conductor equipment wire clamp that meets the requirements of use in windy areas in Xinjiang is obtained.

[0070] In the step S031, since the aluminum alloy liquid ladle after smelting and intervention needs to be transferred to the bottom of the automatic refiner for refining process, and since the temperature of the aluminum alloy liquid ladle after S01 and S02 is about 740°C, if the aluminum alloy liquid is directly poured into the mobile ladle at this time, due to the huge difference between room temperature and the temperature of the aluminum alloy liquid ladle, the aluminum alloy liquid will dissipate heat and release energy to solidify rapidly, causing material loss. Therefore, before pouring the aluminum alloy liquid into the mobile ladle, the mobile ladle is first heated to 400°C, and then the aluminum alloy liquid is poured in. In this way, the temperature difference is within a controllable range, the aluminum alloy liquid will not solidify rapidly, and it is prepared for the refining process of the automatic refiner. This step realizes the transfer of the aluminum alloy liquid to the bottom of the automatic refiner.

[0071] In the step S032, after the mobile ladle reaches the position below the automatic refiner, the switch of the automatic refiner is turned on, and the rotor of the automatic refiner will extend into the aluminum alloy liquid for stirring. With the addition of the refining agent, impurities in the aluminum alloy liquid will float out, thereby accelerating the refining effect.

[0072] In the step S033, the inert gas switch on the automatic refiner is turned on. At this time, the inert gas is added into the aluminum alloy liquid from the air holes at the lower end of the rotor of the automatic refiner. Under the catalytic action of the inert gas, foreign matters such as bubbles and impurities in the aluminum alloy liquid are accelerated to be removed and float to the surface of the aluminum alloy liquid. After the specified operation time is reached, all impurities in the aluminum alloy liquid have floated up, which is convenient for the operator to remove manually.

[0073] In the step S034, in the above step of adding the refining agent and the inert gas, the impurities in the aluminum alloy liquid are floated to the surface of the aluminum alloy liquid, the inert gas switch is turned off, the rotation of the automatic refining machine rotor is stopped and the rotor position is moved at the same time, and the impurities on the surface of the aluminum alloy liquid are skimmed off with the appropriate tools to achieve refining.

[0074] In the step S035, since the volume of aluminum alloy liquid produced in each refining process is relatively large, it is impossible to pour it all at once and it is impossible to achieve immediate pouring. Therefore, after removing impurities, in order to avoid material waste caused by cooling of the aluminum alloy liquid at room temperature, the aluminum alloy liquid is placed in a holding furnace for 10 minutes and then placed in a holding temperature of 680-700°C. Such a holding temperature is designed to meet the direct use of the next pouring.

[0075] Specifically, the inert gas in the SO3 refining process can be nitrogen or argon.

[0076] In this embodiment, the most common choice is to add nitrogen into the aluminum alloy liquid to remove impurities, because nitrogen is widely used, has stable performance, and is cost-effective.

[0077] Embodiment 2

[0078] The wind-resistant equipment wire clamp for an ultra-ultra-high voltage substation manufactured by the manufacturing method described above comprises a double-conductor equipment wire clamp body 1 and a connecting plate 2. The double-conductor equipment wire clamp body 1 and the connecting plate 2 are integrally cast. The double-conductor equipment wire clamp body 1 is a U-shaped structure with a circular cross-section. The connecting plate 2 is a plate-like plane structure. The connecting plate 2 is connected to the middle position of the double-conductor equipment wire clamp body 1. The connection between the two sides of the connecting plate 2 and the double-conductor equipment wire clamp body 1 adopts an elliptical connection design.

[0079] In this embodiment, if Figure 3 As shown, the connection points between the two sides of the connecting plate 2 and the double-conductor equipment clamp body 1 adopt an elliptical connection design, which slows down the change of its cross-section and reduces the sudden change of cross-section, is conducive to casting, reduces defects, increases rigidity, and enhances its wind resistance.

[0080] In this embodiment, Figure 3 (1) is the front view of the wind-resistant equipment clamp, and (2) is the left view of the wind-resistant equipment clamp. It can be seen from (2) that an elliptical structure design is adopted at the connection between the double-conductor equipment clamp body 1 and the connecting plate 2. The major axis of the ellipse here is b, and the minor axis is a. Figure 5 (1) is the main view of the double-conductor equipment clamp in the traditional way, and (2) is the left view of the double-conductor equipment clamp. It can be seen from Figure (2) that the traditional way adopts a circular design, and the diameter here is c.

[0081] for Figure 3 and Figure 5As can be seen from Figure (2) in the figure, since the cross-section of the double-conductor equipment clamp body 1 is circular and the connecting plate 2 is a plate-like plane structure, the cross-section will suddenly change when it is directly connected from the arc to the plane, which will easily cause defects such as pores and looseness during the subsequent pouring process. The elliptical structure is designed to slow down the changes at the equipment clamp body 1 and the connecting plate 2, reduce the cross-section mutation, facilitate pouring, and reduce defects.

[0082] Embodiment 3

[0083] Specifically, the two sides of the dual-conductor equipment clamp body 1 are connected to the aluminum tube 3, and the two rod-shaped ends of the equipment clamp body are processed into insertable aluminum tubes according to the wall thickness of the aluminum tube. The length is 50mm, and a V-shaped groove is formed after insertion, with an angle of 60°-70° and a root gap of 2-3mm, which is convenient for full penetration during welding.

[0084] In this embodiment, Figure 4 As shown, at the connection between the two sides of the double-conductor equipment clamp body 1 and the aluminum tube 3, according to the wall thickness of the aluminum tube, the two rod-shaped ends of the equipment clamp body are processed into insertable aluminum tubes with a length of 50 mm, so that a V-shaped groove is formed after insertion, with an angle of 60°-70°, and the V-shaped opening angle of "60°-70°" is equivalent to each side being processed into a single-side groove of "30°-35°", and the root gap of "60°-70°" is 2-3mm when they are matched together, which is convenient for full penetration during welding, ensuring the quality of the welding part, and the welding effect is reliable and effective, avoiding the cracking problem caused by the traditional welding method, and meeting the use conditions in the wind zone.

[0085] Embodiment 4

[0086] Specifically, reinforcing ribs are designed on both sides of the connecting plate 2 .

[0087] In this embodiment, the design of the reinforcing ribs can improve the structural rigidity and ensure the effectiveness of the double-conductor equipment clamp when used in windy areas.

[0088] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

[0089] Many other changes and modifications may be made without departing from the concept and scope of the present invention.It should be understood that the present invention is not limited to the specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A method for manufacturing a wind-resistant equipment clamp for an ultra-high voltage substation, characterized in that: The following steps are involved: S01: Melting, placing the aluminum ingot into the melting furnace, and setting the temperature of the melting furnace's insulation and dissolving zone to 700-760°C; S02: Modification: When the temperature of the aluminum liquid reaches 740°C, add the modifier Al-10%Sr and keep it warm. The weight of the modifier added is 0.7%-0.9% of the total aluminum liquid weight. The insulation time is 20-30 minutes. After the modification process is completed, the aluminum alloy liquid ladle is obtained; S03: Refining, removing gas and other non-metallic inclusions in the aluminum alloy liquid, that is, degassing and slag removal. The specific steps are: S031: heating the mobile ladle to 400°C, moving the mobile ladle below the aluminum alloy liquid ladle obtained in S02, pouring the aluminum alloy liquid into the mobile ladle, and then moving the mobile ladle below the automatic refiner. S032: Add the refining agent into the automatic refining machine to refine the aluminum alloy liquid ladle. The refining time is 5-10 minutes. S033: Turn on the inert gas switch on the automatic refining machine and send inert gas into the aluminum alloy ladle for degassing. The degassing time is 10-15 minutes. S034: Turn off the inert gas switch, turn off the automatic refiner and stop its rotor from rotating, remove the rotor of the automatic refiner from the aluminum alloy liquid ladle, and use a colander or skimmer to remove impurities on the surface of the aluminum alloy liquid. S035: After cleaning, the aluminum alloy molten ladle is placed in a holding furnace for 10 minutes and the holding temperature is 680-700℃. S04: Mold pouring: preheat the mold to 180-200℃ and pour the refined and insulated aluminum alloy liquid into the mold; S05: Obtain hardware materials with a tensile strength of not less than 160MPa and an elongation at break of not less than 4%.

2. The method for manufacturing a wind-resistant equipment clamp for an ultra-high voltage substation according to claim 1, characterized in that: The furnace of the smelting furnace in S01 needs to be kept clean and free of aluminum ash, aluminum slag, dust and other debris.

3. The method for manufacturing a wind-resistant equipment clamp for an ultra-high voltage substation according to claim 1, characterized in that: The aluminum ingot in S01 is made of ZL102, and the aluminum ingot has a qualified chemical composition after review.

4. The method for manufacturing a wind-resistant equipment clamp for an ultra-high voltage substation according to claim 1, characterized in that: The inert gas in the SO3 refining process can be nitrogen or argon.

5. A wind-resistant equipment clamp for an ultra-high voltage substation manufactured by the manufacturing method according to any one of claims 1 to 4, characterized in that: The invention comprises a double-conductor device wire clamp body (1) and a connecting plate (2), wherein the double-conductor device wire clamp body (1) and the connecting plate (2) are integrally cast, the double-conductor device wire clamp body (1) is a U-shaped structure with a circular cross-section, the connecting plate (2) is a plate-shaped plane structure, the connecting plate (2) is connected to the middle position of the double-conductor device wire clamp body (1), and the connection points between the two sides of the connecting plate (2) and the double-conductor device wire clamp body (1) adopt an elliptical connection design.

6. The wind-resistant equipment clamp for an ultra-high voltage substation according to claim 5, characterized in that: At the connection points between the two sides of the double-conductor equipment clamp body (1) and the aluminum tube (3), the two rod-shaped ends of the equipment clamp body are processed into a shape that can be inserted into the aluminum tube according to the wall thickness of the aluminum tube, with a length of 50 mm. After insertion, a V-shaped groove is formed, with an angle of 60°-70° and a root gap of 2-3 mm, so as to facilitate full penetration during welding.

7. The wind-resistant equipment clamp for an ultra-high voltage substation according to claim 5, characterized in that: Reinforcing ribs are designed on both sides of the connecting plate (2).

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